goehring



3Shee'ts--SheetL GUEHRINE & L. SCHUTTE. v

Air compressing Pumps.

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SSheets--Sheet3- l. GUEHRING & L. SEHUTTE.

Air Compresshg Pumps.

' Patented April 28, 1874.

m /QII 5 rnnr @.rrron.,

Jenn connaitre Ann Louis souurfrn, or ruuinnntrurn,'rnNNsYLvANIatransmetteur in nin-concursales PUMPS..

speeicauon forning part of Letters raient No. neon-ira, laica April ce, 1874; application and Merch 5, 1874.

To all @cham itjm'ay concern:

Be it known that we, JOHN GoEHnING and Louis ScHU'rTE, of Philadelph ia, in the county of Fhiladelphiaand State of Pennsylvania,

have invented certain Improvements in Forcelumps, ot' which the following isaspecification:

Our invention relates to a direct-acting piston-pump, designed more especially to beeperated by waterfpressure, for the purpose of forcing air into ale andbeer barrels, but adapted equally well for other purposes. The invention consists in a novel manner of constructing the pump as a whole, in' a novel valve-gear therefor, and in the combination therewith of an automatic spring-valve to regulate the force or pressure of the discharge.

Figure l is a longitudinal vertical see-tion through the center of our pump. Fig. 2 is a side elevation of the same; Fig. 3, a central cross-section ofthe same 5 Fig. 4, a plan View of the foot or base or the central body; Fig. 5,

an enlarged face view of the valye-gear; Fig.

d, a front elevation of the pump' connected with three beer-barrels; Fig. 7 awertical central section through onev ofthe automatic governing-valvcs; Fig. 8, asectional elevation, on. va large scala-showing a modified forni et the pump. Y A.

Uur pump consists of three main 'parts-viz.,

a central body or stand, A, and two' horizon-- tal cylinders, ll l3secured to ,opposite sides of the body in line with cach other, as shown in Figs. l and 2. The central body serves as a support for the cylinders, and contains inlet and outlet passages, the main valve, andthe gearing of the same. rlhe two cylinders, their connections, and attachments are duplicates oi' each other. Each cylinder has its outer end closed by a head or cover, o, and its in'ner'end closed by contact with the outside of the body,

-. There is a space or chamber in the body be-` twefen the cylinders, but it has no connection or communication with them. Each cylinder contains a sliding piston-head, l, and the two heads are connected by a straight unbroken A rod, K, which passes through the central body,

as shown, so that the two heads must always move together, one moving toward the inner end of its cylinder as the other moves toward the outer end of the opposite cylinder, and vice versa. The water or other motor is admitted into thc two cylinders alternately inside ot' the pistons, so as to forceone piston and then the other outward, each piston as it moves outward drawing the other inward by meansl of the connecting-rod. The forcing is donc by means ot' the two pistons alternately forcing the air from the outer ends of the cylinders, as hereinafter explained. lin the body A around the piston-rod there is mounted a sleeve or tube, t', thcends of which extend through stuil'- in g--boxes .into the respective cylinders, as shown in Fig-1, so that as the pistons move back and forth they strike vthe sleeve alternately and move it endwise, irst in one direction and then in the other. This sleeve is for the purpose ofl operating' the main valve, as

present-ly explained. The water or other inotor is admit-ted' through a pipe, a., into the base of the body A, and passes up through a passage, b, into a chamber, D, at the top. From the'ehamber D passagesc lead into the inner ends of the cylinders to admit the water thereto inside of the pistons. The admission ot water to the cylinders and its `escape therefrom is controlled by a sliding valve, E, similar to the slide-Valve of the common steam-engine. The water returns from the cylinders through the passages c, by which it entered, and passes uuder the valve E into a passa-ge, g, which leads downwardinto the base of the pump, from which the water eseapcs'through a pipe, g.

.The valve E -is-moved to and fro in such manner that it connects the two passages o with theoutlet-passage a alternately, and so that it ,admits the water into first one cylinder and then the other. In this wa y the water is caused the cylinder through the valve e and pipe ll out through the pipe j'. As the two pistons are forcing alternately and through a common delivery-pipe, a continuous discharge is maintained.. Y l

. It will be observed that the pistons are solid, that the water and air enter the two cylinders alternately, that the water driving the pisto and fro by the pistons abutting against its ends.

A rock-shaft, w, is mounted in the body,I and provided on its inner end with a depending arm, K, connected to the sleeve i',

so that as the sleeve .moves to and fro it imparts a rocking motion to the shaft w.

` The shaft w is provided. on its ou-ter end with an upright quadrantal plate, l, having cuitsrear corners projections or cams m, and on its front face at the middle a stud or pin, n, as shown in Figs. 2, 3, and 5. In the top of the body there is mounted another horizontal rock-shaft, p, having 4on its inner end depending arms which engage with the valve- E, and on its outer end two depending arms,

o and q, which engage with and are operated by4 the plate l on the-lower rock-shaft, as shown in Figs. 2, 3, and 5. Thus it will be'seen that when the pistons move the sleeve t" it imparts motion, through the arm k, to the rock-shaft w audits plate l, and that said plate in turn transmitsmotion through the arms o and q to the upper rock-.shaft '1), which, through the arms, on its inner end, moves the valve E. It is very desirable to have the valve move at the proper time very quickly, and hence we avail ourselves of the peculiar construction and arrangement shown and now to be described, by which the valve is thrown by .a spring movement instantaneously. Of the two arms o and q on the outer end of the rockshaft p the latter 1s attached rigidly, while the former is attached in such manner that it can be moved laterally, while the shaft p and plate moves to and i'ro it holds the valve, puts the other arm are held stationary. The inner fixed arm q is provided on its outer side with a circular sleeve er collar, s, over lwhich a cor-A responding collar, fr, on the outer movable arm, lits, as shown in Figs. 3 and 5. These collars form the connection between thetwo arms o q and tlie support for'the outer movable one, o. The two collars are cut away on the under side, so as to leave an opening, t, through them, as shown lin Figs. 3 and 5.

' W'ithin the inside collar there is mounted a coiled spring, u, the ends of which are turned outward and bear strongly against the sides of the opening t, as shown. The-spring, thus arranged, tendsto keep the openings t of the two collars opposite or in line with each other, and to hold the outer arm o opposite or inline with the. middle of the rear arm q, which is made very wide, as shown. If the rear arm q be held still, and the front arm o. turned to.

either side, a tension will be brought upon the spring, so that upon releasing the'rear arm q the spring will throwV it around opposite o1' in line with the front arm o. The rear arm or plate q is provided on its lower front corners with two studs, fv, which, as the arm is movedv to and fro, are carried down behind the quadrantal plate l of the lower shaft w. The front arm o of the upper shaft is provided'in its lower end with a vertical slot which receives -the stud or pin n onthe lower quadrantal plate l, so that as said plate tips back and forth it imparts a positive motion to said arm o, moving the same to and fro. The shoulders or projections m on the upper rear corners of the'quadrantal plate l extend back, so that at certain times they come in contact with the studs e on the arm or plate q.,

The operation of the above parts is as fol lows: As the quadrantal plate l moves toward the right its stud n moves the arm o in the same direction, while the shoulder m on its Vleft side slides under the corresponding stud 'v on the arm q, and holds said arm, and thereby the valve, from moving. This continues until the quadrantalwplate has nearly finished its movement, when its shoulder passes from under the stud fu, and thereby releases the rear plate q, whereupon the spring a instantly throws the arm q around in line with the arm o, andv gives the valve E the required movement, the parts then being in the .positions shown in Figs. 2 and 5. The spring is put under tension in order to throw thevalve by the movement of the front' arm o, while the quadrantalv plate holdsV the rear arm q still, as before explained.

When the movement of the quadrantal plate is reversed, and it moves toward the left, its right shoulder m bears under the corresponding stud v of the plate g and holds the arm q` and valve still, while the front arm ois moved to the left, until at the end of the movement the shoulder releases the rear arm and the spring throws the valve to the left in ,the same mannethat it before did to the right.

Thus it will be seen that as the qnadrantal the spring under tension, and then releases the valve, so that the spring gives it a very quick movement.

In order to prevent all jar and concussion, the water-space or chamber D is provided with an air-chamber, F, as shown in Figs. 1 and 2.

It will be noticed that the central body A is composed of three parts, the main Vor central portion, the top or water-chamber, and the base or foot, as shown in Figs. 1, 2, 3, and 4. This construction admits of the parts being readily cast with the proper passages, &c., ih them.

The passages in the base or foot are clearlyshown in Fig. 4, which is a top `plan view of iure, and to have'it govern automatically, we

apply to the delivery-pipe a spring-valve, M,

as shown in Figs. 6 a .nd`7. In this valve the l inlet and outlet openings are at right angles v has its 'end'providedwith a largepiston, rr',which iits closely within the case or body, as shown in Fig. 7. Behind the piston there is a spiral spring, y, which tends .to press the p iston inward and force the check-valve a: open. `The spring rests at its outer end against a handscrew, z, by which the tension -of the spring may be increasedl or diminished, as required. As long as the pressure of the vair from the pump is within the fixed limit, the spring holds the check open, and the air is allowed to pass freelythroughA the valve; but when the pressure becomes too great, the air forces the piston backward, and thereby closes the check-valve to a greater or less degree, and limits the passage of the air. By turning the hand-screw, the valve may be -set for any pressure required. A duid-pressure gage may be applied to the valve, asshown in Fig. 7, as

a guide, bywhich to set the same. 4,

It is obvious that when 'the pump is con.-

structedas above described, andas'shown in Fig. I, it can onlyforee air up to a pressurey 4nearly equal to that of the water bywhich the pump lis driven. When it is desiredto have the pump force air at a` pressure greater than that of the water by which the pump is driven, each piston has secured to its -outer side a rod or plunger, P, which extends out through the end or head of the cylinder, as shown in Fig. 8. These rods or plungers reducethe transverse area of the air-space'below that of the water-space, s0 that the pump will force air at a greater pressure than thatof the water. The capacity of the pump will,

of course, be decreased in proportion to its increase in power. The heads of the cylindersl will be provided with stung-boxes around the rods or plungers to prevent leakage. The

inlet and outlet valves in the heads will, of y course, be arranged out'of the wayiof the rods or plungers. V

When the pump is constructed, as in Figi,

with the inlet-valves in the cylinder-heads in communication with the outside air, it is not,

of course, adapted for drawing air trom any particular point, nor for pumping water; but,

by connecting a suction-pipe, R, with the inlet-valves in the cylinder-heads, as shown in 'Fig 8, the pump .is adapted for drawing air or water from any desired point.

As before stated', the pump i is intended mainly for use in forcingan in to ale and beer barrels. In such case 1t is constructed as in Fig. 1, and connected'permanently with the waterlsupply and the beer-barrels by pipes, as

shown in Fig. 6. The pump thus arranged will be found ofgreat service in restaurants -Ilaving thnsdcscribed our invention, what we claim is-'- l. In a water-power 'air-pump, the conibination of acentral body containing the valve motion and-water-passages, and two pum'p- A cylinders on opposite sides of the body, act.

ing alternately as driving and forcing cylinders, as shown and described.

2. In a water-power air-pump, the combina tonof a central body containing the valve` motion and water passages, two cylinders mounted on opposite sides of said body, and acting alternately as driving' and forcing cylinders, and provided each with an inlet and an outlet valve as shown and described.

3. In a water-power airpump, the combinay tion of a central body 'containing 1the valve motion -and water-passages, two cylinders mounted on opposite sides, and provided eachl with an inlet and an outlet valve at the outer end, and two pistons mounted in the cylinders, and-connected by a straight unbroken rod, substantially as shown and described.-

4. Ina waterfpower air-pump,the combination ofthe-central body, the'two cylinders, the two pistons. 'connected bya straight unbrokenrod, and the sleeve i mounted on the rod, and extending into the two cylinders, and connected with the valve-gear, substantially as-shown.

5. In a pump, substantially such as herein described, the valve motion, consisting of the quadrant l, having shoulders m, arm q,hav1ng studs v, arm o, and spring u, constructed and arranged to operate as shown and set forth.

6. In a water-power A4air-pump, a central body containing the valve-gear,and havingits foot orbase provided with the water-waste and delivery passages, as shown'.

7. In combinationA with the pump, con

structed' and operating as shown and vde-y scribed, the automatic governing-valve M,'

constructed and lapplied as and for the pur posedescribed.

8. In a water-power pump, the combination piston-rod, and twov plungers attached to the outer sides of the respective pistons and extcndin g through the cylinder-heads, as shown.

JOHN GOEHRING. v LOUIS SCHUTTE. Witnesses:

Guns. E. PANcoAs'r, EDW. MONTcoment'.l 

